It is easy to understand why in Phoenix an HVAC unit only lasts between 12 to 15 years, while the average lifespan for an HVAC unit in other places is between 15 and 20 years.
Due to more wear and tear on HVAC units, it causes a shorter lifespan.
Most homes have a split unit HVAC system, and they are built to last through extreme conditions. The units can withstand heat of up to 95 degrees and still function efficiently. However, when the temperatures rise above that and into the triple digits, the HVAC condenser might have a hard time keeping a house comfortable and the high temperatures might even cause extra damage to the unit. So, in Phoenix when the temperature soars to more than 100 degrees, it means that the outdoor condenser is working hard to keep up with cooling our homes. And the more the temperature rises into triple digits, the more wear and tear the unit experiences. The average temperature in the Summer for Phoenix is almost 100 degrees, with July being the hottest month of the year averaging about 106 degrees. Therefore, during the hottest part of the year, that lasts from May to about September, the HVAC condensers are running steadily. Of course, when the HVAC condenser is working overtime, it will cause a lot of extra wear and tear on the unit. And this will therefore lead to the HVAC unit having a shorter lifespan. The good news is, regular maintenance can extend the lifespan of the HVAC unit, so it’s good to schedule yearly service.